Radiator unit.



J. M. FEDDERS.

RADIATOR UNIT.

APPLICATION FILED 0CT.5.1917- Patented July 30, 1918.

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UNITED STATES PATENT o mo JOHN M. rnnnnns, or BUFFALO,

NEW YORK, ASSIG-NOR T FEDDERS MANUFACTURING COMPANY, INC., 015 BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

RADIATOR UNIT.

Specification of Letters Patent.

Patented July 30, 1918.

Application filed October 5, 1917. Serial No. 194,963.

citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Radiator Units, of which the following is a specification.

This invention relates, to a radiator unit which is intended to form a part of a radiator for cooling the water of a gas engine. The purpose of this invention is to provide improved means for increasing the radiating capacity of the radiator and to accomplish this ina simple and efficient manner and at a minimum cost.

In the accompanying drawings:

Figure 1 is a front elevation, partly in section, of a radiator core embodying my invention- Fig. 2 is a horizontal section taken on the correspondingly numbered line in Fig. 1. Fig. 3 is a framentary perspective View done of the radiating members or elements of a radiator unit. Fig. 4 is a fragmentary perspective view of a blank from which a radiating member is constructed.

Similar characters of reference refer to like parts throughout the several views.

Each radiator unit comprises two outer walls 1, 1, and a radiating member 2 arranged between these two outer walls. When a number of such units are assembled the outer walls of each unit cooperate with corresponding walls of other units to'form a plurality of longitudinal water tubes or passages 3 through which the water of the gas engine is circulated by connectin opposite ends of these passages with suitable headers or water boxes which form part of the completed radiator, in any manner well known in this art.

Each of the outer walls is preferably constructed of a strip of sheet metal which is bent into zi -zag form and when two of such walls are placed side by side, the water passage between the same is of tortuous or serpentine form, as shown in Fig. 1. The two water tube walls of adjacent radiator units are preferably spaced apart by providing their opposite longitudinal edges with offsets 4 which are adapted to engage with each other and which are united by solder to form a water tight joint therebetween. The two walls of each unit are preferably constructed of a single sheet of metal, two of the corresponding ends of these walls being preferably connected by doubling the metal forming one turn of these two walls at one end of the radiating member, as shown at 5 in Fig. 1, while the terminals of the strip forming these two walls are interlocked with each other across the opposite end of the respective radiating member by means of a seam as shown at 6' in I the-same figure.

The radiating member in its preferred form comprises a plurality of transverse plates 7 which are arranged in a longitudinal row, these several plates being spaced apart and each of these plates engaging its opposite side edges with the bottoms or valleys on the opposing sides of the two outer walls of the respective radiator unit.

Alternating with these transverse plates is a row of longitudinal plates 8 which are arranged between the outer walls of each radiating unit and each engaging its opposite side edges with the adj aoent transverse plates about midway of the side'edges of the latter' so as to form with said transverse plates and the adjacent parts of the outer walls two passages 9, through which the air passes for cooling the water in the tubes 3.

10 represents a plurality of coupling straps, each of which connects a side edge of one of the longitudinal plates with the adjacent part of one of the adjacent transverse plates. The longitudinal and transverse plates and couplin straps of a radiating member are prefera ly constructed of a single sheet of metal which is provided with a plurality of transverse slits l1 and a plurality of pairs of longitudinal slits 12, extending from one side edge of each of the transverse slits. In making the radiating -member from this sheet of metal blank,

those parts of the blank which form the transverseand longitudinal plates are shifted relatively to each other so that the plates 7 arearranged transversely and the plates 8 are arranged lengthwise between the central parts of the transverse plates, this being accomplished by folding the several couphng strips inwardly upon the transverse plates and bending the longitudinal plates at right angles to the inner ends of the straps. By this means a connection is maintained between the several transverse and longitudinal plates and a plurality of notches or openings 13 are formed in the transverse plates between the folded straps and the side edges of these transverse plates owing to the displacement of the stock of these plates to form said straps.

In the drawings each of the transverse plates is connected with the adjacent longitudinal plate by a pair of such coupling straps, but if desired, this number may be increased or decreased depending upon the width of the radiator which is to be constructed.

These radiating members may be retained in position between the companion outer walls of a radiator unit in any suitable manner, for instance, by dipping the opposite ends of the radiator core into solder so as to connect each radiating member with its walls by solder joint.

A radiator member thus constructed provides a maximum radiating efficiency for the radiator with a minimum use of sheet metal and as the several parts of the radiating member are reliably connected the same provides a firm spacing and bracing effect between adjacent water tubes and strengthens the radiator as awhole so that the same is capable of withstanding the severe strains to which it is subjected while in use.

I claim as my invention:

1. A radiator unit comprising two outer corrugated walls each of which is of zig-Zag form, and an intermediate radiating member arranged between said outer walls and comprising a plurality of transverse plates arranged in a longitudinal row between said outer Walls and each engaging its opposite side edges with the bottoms of corresponding corrugations on the opposing sides of said outer walls, a plurality of longitudinal plates arranged between said outer walls and alternating with said transverse plates, and a plurality of coupling straps connecting 0pposite side edges of each longitudinal plate with the adjacent transverse plates at a distance from the side edges of the latter.

2. A radiator unit comprising two outer corrugated walls each of which is of zig-zag form, and an intermediate radiating member arranged between said outer walls and comprising a plurality of transverse plates arranged in a longitudinal row between said outer walls and each engaging its opposite side edges with the bottoms of corresponding corrugations on the opposing sides of said outer walls, a plurality of longitudinal plates arranged between said outer walls and alternating with said transverse plates, and a plurality of coupling straps connectng opposite side edges of each longitudinal form said coupling straps.

plate with the adjacent transverse plates at a distance from the side edges of the latter, said transverse and longitudinal plates and straps being constructed from a single strip of sheet metal which is slitted transversely for dividing the same into the several transverse and longitudinal plates and each transverse plate being provided with pairs of slits extending inwardly from its side edges to form said coupling straps.

3. A radiating member for radiator units comprising a plurality of transverse plates arranged in a longitudinal row, a plurality of longitudinal plates alternating with said transverse plates and arranged midway between opposite side edges of the latter, and i I opposite side edges of each longitudinal plate with the adjacent transverse plates at a. distance from the side edges of the latter, said transverse and longitudinal plates and straps being constructed from a single strip of sheet metal which is slitted transversely for dividing the same into the several transverse and longitudinal plates and each trans verse plate being provided with pairs of slits extending inwardly from its side edges to 5. A radiating member for radiator units comprising a plurality of transverse plates arranged in a longitudinal row, a plurality of longitudinal plates alternatingvith said transverse plates and arranged mldway between opposite side edges of the latter, and

a plurality of coupling straps connecting opposite side edges of.each longitudinal plate with the adjacent transverse plates at a distance from the side edges of the latter, said transverse and longitudinal plates and straps being formed integrally from a sheet of metal and said coupling straps being formed. by stock cut out ot said side edge portions of said trai'isverse plates and folded inwardly on the same forming notches in said side edge portions of the transverse plates.

JOHN M. FEDDERS. 

